various timing related bugfixes

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3395 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/media/MediaNode.h

@@ -325,7 +325,7 @@ virtual		status_t _Reserved_MediaNode_15(void *);
 		int32 _mChangeCount;			//	deprecated
 		int32 _mChangeCountReserved;	//	deprecated
 		uint64 fKinds;
-		media_node_id _unused;
+		media_node_id fTimeSourceID;
 
 		BBufferProducer * fProducerThis;
 		BBufferConsumer * fConsumerThis;

headers/private/media/DataExchange.h

@@ -109,6 +109,7 @@ enum {
 	NODE_TIME_WARP,
 	NODE_PREROLL,
 	NODE_SET_TIMESOURCE,
+	NODE_GET_TIMESOURCE,
 	NODE_REQUEST_COMPLETED,
 	NODE_FINAL_RELEASE,
 	
@@ -840,6 +841,15 @@ struct node_set_timesource_command : public command_data
 	media_node_id timesource_id;
 };
 
+struct node_get_timesource_request : public request_data
+{
+};
+
+struct node_get_timesource_reply : public reply_data
+{
+	media_node_id timesource_id;
+};
+
 struct node_final_release_command : public command_data
 {
 };

headers/private/media/MediaMisc.h

@@ -13,7 +13,9 @@
 #define IS_INVALID_SOURCE(_src)			((_src).port <= 0)
 #define IS_INVALID_DESTINATION(_dest) 	((_dest).port <= 0)
 
-#define NODE_UNREGISTERED_ID	-2
+#define NODE_JUST_CREATED_ID			-1
+#define NODE_UNREGISTERED_ID			-2
+#define NODE_SYSTEM_TIMESOURCE_ID		1
 
 #define BAD_MEDIA_SERVER_PORT			-222
 #define BAD_MEDIA_ADDON_SERVER_PORT		-444

headers/private/media/MediaRosterEx.h

@@ -49,6 +49,8 @@ public:
 	status_t GetAllInputs(const media_node & node, List<media_input> *list);
 	status_t PublishOutputs(const media_node & node, List<media_output> *list);
 	status_t PublishInputs(const media_node & node, List<media_input> *list);
+	
+	BTimeSource *MakeTimeSourceObject(media_node_id timesource_id);
 
 private:
 	friend class BMediaRoster;